/*
 * Copyright 2019 Flipkart Internet Pvt. Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.flipkart.ohos.proteus.processor;

import ohos.agp.components.Component;
import ohos.agp.utils.LayoutAlignment;
import ohos.app.Context;
import ohos.global.resource.NotExistException;
import ohos.global.resource.WrongTypeException;
import ohos.global.resource.solidxml.Theme;

import com.flipkart.ohos.proteus.parser.ParseHelper;
import com.flipkart.ohos.proteus.value.AttributeResource;
import com.flipkart.ohos.proteus.value.Primitive;
import com.flipkart.ohos.proteus.value.Resource;
import com.flipkart.ohos.proteus.value.StyleResource;
import com.flipkart.ohos.proteus.value.Value;

import java.io.IOException;

/**
 * GravityAttributeProcessor
 *
 * @author aditya.sharat
 */

public abstract class GravityAttributeProcessor<V extends Component> extends AttributeProcessor<V> {
    public static final Primitive NO_GRAVITY = new Primitive(LayoutAlignment.UNSET);

    @Override
    public void handleValue(V view, Value value) {
        int gravity = LayoutAlignment.UNSET;
        if (value.isPrimitive() && value.getAsPrimitive().isNumber()) {
            gravity = value.getAsInt();
        } else if (value.isPrimitive()) {
            gravity = ParseHelper.parseGravity(value.getAsString());
        }
        //noinspection WrongConstant
        setGravity(view, gravity);
    }

    @Override
    public void handleResource(V view, Resource resource) {
        Integer gravity = resource.getInteger(view.getContext());
        //noinspection WrongConstant
        setGravity(view, null != gravity ? gravity : LayoutAlignment.UNSET);
    }

    @Override
    public void handleAttributeResource(V view, AttributeResource attribute) {
        Theme theme = attribute.applyTheme(view.getContext());
        set(view, theme);
    }

    @Override
    public void handleStyleResource(V view, StyleResource style) {
        Theme theme = style.applyTheme(view.getContext());
        set(view, theme);
    }

    private void set(V view, Theme theme) {
        //noinspection WrongConstant
        try {
            setGravity(view, theme.getIntegerValue(view.getName(), LayoutAlignment.UNSET));
        } catch (IOException | NotExistException | WrongTypeException e) {
            e.printStackTrace();
        }
    }

    public abstract void setGravity(V view, int gravity);

    @Override
    public Value compile(Value value, Context context) {
        if (null == value) {
            return NO_GRAVITY;
        }
        return ParseHelper.getGravity(value.getAsString());
    }
    //    @IntDef({LayoutAlignment.UNSET,
    //        LayoutAlignment.TOP,
    //        LayoutAlignment.BOTTOM,
    //        LayoutAlignment.LEFT,
    //        LayoutAlignment.RIGHT,
    //        LayoutAlignment.START,
    //        LayoutAlignment.END,
    //        LayoutAlignment.VERTICAL_CENTER,
    //        LayoutAlignment.FILL_VERTICAL,
    //        LayoutAlignment.HORIZONTAL_CENTER,
    //        LayoutAlignment.FILL_HORIZONTAL,
    //        LayoutAlignment.CENTER,
    //        LayoutAlignment.FILL})
    //    @Retention(RetentionPolicy.SOURCE)
    //    @Target({FIELD, METHOD, PARAMETER, LOCAL_VARIABLE, TYPE})
    //    public @interface Gravity {
    //    }
}
